Mast



FIG. 1 is a perspective view of a mast showing our new design;

FIG. 2 is a second perspective view thereof; and,

FIG. 3 is a third perspective view thereof.

The mast of FIGS. 1-3 is symmetrical about a plane defined by the vertical axis and the horizontally projecting portion of the mast. 

CLAIM The ornamental design for a mast, as shown and described. 